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The worst IT catastrophe ever hit less than 1% of all Microsoft Windows devices — “The broad economic and societal impacts reflect the use of CrowdStrike by enterprises that run many critical services”: Microsoft

A faulty software update from cybersecurity firm CrowdStrike affected 8.5 million devices globally that rely on the Microsoft Windows operating system.

A faulty software update from cybersecurity firm CrowdStrike Holdings Inc. affected 8.5 million devices globally that rely on the Microsoft Windows operating system. Microsoft Corp. gave the full scope of the worldwide IT outage for the first time in a blog post on Saturday, saying those affected represented fewer than 1% of all devices that use Windows. In an effort to explain how another firm’s software update brought down Windows systems, Ann Johnson, a deputy chief information security officer at Microsoft, used the analogy of a driver filling a car with fuel.

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